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Fix to null exception for rdf:list with one element #46

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merged 1 commit into from
Mar 31, 2023
Merged

Fix to null exception for rdf:list with one element #46

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5 changes: 5 additions & 0 deletions src/main/java/org/edmcouncil/rdf_toolkit/comparator/ComparisonUtils.java
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Original file line number Diff line number Diff line change
Expand Up @@ -135,6 +135,11 @@ public static boolean isCollection(ComparisonContext comparisonContext,
int typeCount = predicates.contains(Constants.RDF_TYPE) ? 1 : 0;
if (predicates.size() == firstCount + restCount + typeCount) {
SortedTurtleObjectList firstValues = poMap.get(Constants.rdfFirst);
if (firstValues == null) {
for (Object poMapKey : poMap.keySet()) {
firstValues = poMap.get(poMapKey);
}
}
for (Value value : firstValues) {
// all collection members must match the collection class type
if (!collectionClass.isInstance(value)) {
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